Sometimes I like listening to music I’ve loved since I was in high school, so the album from the movie “Heavy Metal”, or other heavy metal bands from that time, sometimes music from bands like Yaz (Yazoo in the UK) or Depeche Mode, or other work by Vince Clark. Sometimes I’m in a Rush or Styx mood.
I have also discovered that there is a category of music called “instrumental heavy metal”, but I have not yet done much exploring there. I found out about it through the web comic author Jeph Jacques (https://questionablecontent.net/), who also has a one-man-band called “Deathmøle”.
In college, I found I could study best by listening to Johan Sebastian Bach pipe organ concertos. But for being productive in a work-type setting, I find that it works better to have more up tempo music whose words I know like the back of my hand.